diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2006-07-03 00:24:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-03 15:27:03 -0700 |
| commit | 1f194a4c393103ac925001d7e04b05fbb122580d (patch) | |
| tree | 9185dd3ecc6a03f6bc8a15d330c862b86ad23730 /drivers/s390/char/sclp.c | |
| parent | 6375e2b74c620794e1a27a26e4338aec2e41346a (diff) | |
[PATCH] lockdep: irqtrace subsystem, s390 support
irqtrace support for s390.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/s390/char/sclp.c')
| -rw-r--r-- | drivers/s390/char/sclp.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c index 4138564402b..985d1613baa 100644 --- a/drivers/s390/char/sclp.c +++ b/drivers/s390/char/sclp.c @@ -383,6 +383,7 @@ void sclp_sync_wait(void) { unsigned long psw_mask; + unsigned long flags; unsigned long cr0, cr0_sync; u64 timeout; @@ -395,9 +396,11 @@ sclp_sync_wait(void) sclp_tod_from_jiffies(sclp_request_timer.expires - jiffies); } + local_irq_save(flags); /* Prevent bottom half from executing once we force interrupts open */ local_bh_disable(); /* Enable service-signal interruption, disable timer interrupts */ + trace_hardirqs_on(); __ctl_store(cr0, 0, 0); cr0_sync = cr0; cr0_sync |= 0x00000200; @@ -415,11 +418,10 @@ sclp_sync_wait(void) barrier(); cpu_relax(); } - /* Restore interrupt settings */ - asm volatile ("SSM 0(%0)" - : : "a" (&psw_mask) : "memory"); + local_irq_disable(); __ctl_load(cr0, 0, 0); - __local_bh_enable(); + _local_bh_enable(); + local_irq_restore(flags); } EXPORT_SYMBOL(sclp_sync_wait); |